Zhoushan Dinghai Demaji Twin Screw Manufactory., Ltd Is one of the largest manufacturing enterprises in the field in China. Our company has years of experience in researching, designing and manufacturing highly precise screws and barrels, screw assembly parts and barrel assembly parts. Our company is located in the Industrial zone of Jintang Town, Dinghai County, Zhoushan City, Zhejiang Province.

We can supply nitriding, chrome plating and stainless steel, bimetallic and HVOF surface spraying services. Our company passed ISO9001: 2000 quality management system certification. We continue to perfect the system. Therefore, all of our products are guaranteed to be of perfect quality. Quality checking is the most important stage in our product processing.

Our company was evaluated as "The national top 10 quality enterprises" by Chinese Enterprise Brand Development Committee and "The national screw quality-prestige double guarantee demonstration unit" by Chinese Market Brand Strategic Concept Management Committee in 2007. DEMAGE staff members comply with RoHS standard and provide the best service for clients.

Facing the future, the staff members of our company will continue to follow the spirit of "hard working, providing the first class products and services, fully meeting customer's demands".

Our Tenets:
Resources saving for the country
Leadership
More benefits for customers
More opportunities for staff members
More profits for our enterprise and to create a harmonious and prosperous society

Main Products:
Super-hard Conical Twin Screws & Double Hole Cylinders
Super-hard Parallel Twin Screws & Double Hole Cylinders
Bimetallic Screws & Cylinders
Super-hard Screws & Barrels for Rubber Machines
Super-hard Screws& Barrels for Extruder Machines
Super-hard Screws & Barrels for Injection Machines